yup.test

[the-mgi]

i have a field whose values can be either [a,b,c,d,e]
would like to add validation constraint to another field as
if === a ? length should be 5
if === b ? length should be 10
if === c ? length should be 15
and so on.
in yup i am aware that this can be done using .test function. does this library support .test creation? if so any example would be appreciated.
if not then can you please point me in the right direction to add this custom functionality?
any help would be apprecitated, thanks.